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Delx Commerce X402 Delivery Hash Check
x402
Delx Commerce X402 Delivery Hash Check is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Verifies whether a given text's SHA-256 hash matches an expected hash, providing cryptographic delivery proof for x402 pay-per-result transactions
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object with a 'matched' boolean indicating if the text's actual SHA-256 equals the expected hash, the computed actual_sha256, the provided expected_sha256, and evidence metadata confirming no data was retained and no external calls were made. Status is labeled 'advisory' with a schema identifier for auditability.
Example use cases
Auditing x402 paid delivery
“I just paid for a text result via x402 and received this content: 'Annual report summary paragraph...' — can you verify it matches the hash I was given before payment: 633163569ade0beccda175c1e30d98ad117e7dfb0197ff7889836a9de9d3f823?”
Tamper detection for agent output
“My AI agent returned a response and I want to make sure it hasn't been modified in transit. The response text is 'Quarterly earnings data: Q3 revenue was $4.2M.' and the original committed hash was 9f86d081884c7d659a2feaa0c55ad015a3bf4f1b06d3d27a9b5b3c8f2c39ab1 — do they match?”
Smart contract delivery proof
“Before I release payment from escrow, verify that the delivered content 'Product license key: XXXX-YYYY-ZZZZ' has the SHA-256 hash a3f1c9d45b2e87690c4f2d31ab56e7f0981234c567890abcdef1234567890abc that was agreed upon in our contract.”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/x402-delivery-hash-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, pay-per-result cryptographic check to verify that text content delivered by an x402-compatible API matches a pre-committed SHA-256 hash — particularly in trustless agent-to-agent commerce flows where tamper evidence matters. Prefer this over rolling your own hash comparison when you want an auditable, third-party-attested verification with no data retention, priced at fractions of a cent per call.
Side effects
- Missing or empty 'text' field returns an error or undefined hash comparison
- Invalid or malformed 'expected_sha256' string (wrong length/format) may cause a mismatch result rather than an error
- Payload exceeding 8192 character limit for either field is rejected
- Network timeout results in no response
- Hash collision edge cases are theoretically possible but cryptographically negligible
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | Text supplied to X402 Delivery Hash Check; used only for this bounded calculation and processed in memory without retention. |
| expected_sha256 | string | Expected Sha256 supplied to X402 Delivery Hash Check; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"matched": false,
"actual_sha256": "633163569ade0beccda175c1e30d98ad117e7dfb0197ff7889836a9de9d3f823",
"expected_sha256": "7ef67e6a0c33e752d9848702556ca7c63ce63718b2e62b10d1b1d2386e4db0cc"
},
"schema": "delx/util-x402-delivery-hash-check/v1",
"status": "advisory",
"evidence": {
"retained": false,
"input_sha256": "ba733049f9eb88f065a3f19eafada98c9f92d558213695771252332799ffe285",
"external_calls": 0
},
"operation": "delivery_contract:x402_delivery_hash_check"
}
}Tags
x402
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